Roll grinder



H. E. P. TAYLOR Jan. 29, 1929.

ROLL GRINDER 9' Sheets-Sheet 1 Filed April 19, 1924 1,700,422 H. E. P. TAYLOR ROLLGRINDER Filed April 19, 1924 9 Sheet-Sheet 2 Jan. 29, 1929. 1,100,422

I H. E. P. TAYLOR ROLL GR INDER Filed April 19, 1924 9 Sheets-Sheet 5 Jan. 29, 1929.

H. E. P. TAYLOR ROLL GRINDER Filed April 19, 1924 9 Sheets-Sheet 4 Jan. 29, 1929. 1,700,422

' H. E. P. TAYLOR ROLL GR INDER W/ i I "2 Zip;

Jan. 29, 1929.

E. P. TAYLOR ROLL GRINDER 9 Sheets-Sheet 6 Filed April 19, 1924 y/wwm Jan. 29, 1929. I 1,700,422

H. E. P. TAYLOR ROLL GRINDER Filed April 19, 1924 9 Sheets-Sheet 7 H. E. P. TAYLOR ROLL GRINDER Filed April 19, 1924 9 Sheets-Sheet 8 I r ggw/ m Jan. 29, 1929.

H. E. P. TAYLOR ROLL GRINDER Filed April 19, 1924 9 Sheets-Sheet 9 w m a m 8 old 1 m 0/ I d 9 m'w 3 7 w m 3 f m m [m 6, m f a ,4 7w 5 x m -w M ii m M 5 '4 0 .n o m m u m m T M :1 o m@ 0% l WW m Z a 00 M i w 7 0g I WW w a M O r m M a 9m 3 w V .v 2 W M 2 Z A W 3; m 2 w W Patented Jan. 29, 1929.

UNITED STATES PATENT OFFICE.

HENRY E. P. TAYLOR, OF SEYMOUR, CONNECTICUT, ASSIGNOR. BY MESNE ifi'SIGN- MENTS, T FARREL-IBIRMINGHAM COMPANY, INCORPORATED, OF ANSONIA, CON- NECTICUT, A CORPORATION OF CONNECTICUT.

ROLL GRINDER.

Application filed April 19, 1924. Serial No. 707,633.

Tlllfi invention relates to roll grinding mechanism, and more particularly to that class of grinding mechanism which is employed in grinding rolls such as are used, for instance, in connection with rolling mills and calendering machines and other relatively heavy work, though the mechanism may be employed for grinding rolls of a different character and for a wide variety of uses.

In grinding heavy rolls of this character it is frequently desirable to grind them so that the surfaces will be either concave or convex, and it is desirable that the grinding machine be so constructed as to produce, not only a concave or a convex surface when desired. but also to produce, when desired, a roll having a true cylindrical surface.

(hie object of my invention is to provide a roll grinding machine such that rolls may be evenly cut or formed with the desired crown, or convexity or concavity of surface, the mechani in being readily adjustable for difierent degrees of crowning and being practically automatic in operation after adjustment.

A still further object of the invention is to e a roll grinding machine capable oi ing upon rolls varying in size between ely wide limits, and with which truly nndrical rolls may be formed as well as rolis having convex or concave surfaces.

Still another object of my invention is the provision of a machine of this character which ma j be more easily operated than prior machines, and may for this purpose have its various controls conveniently grouped so that they may be reached by the operator without the necessity of having to leave his these and other ends the invention conof th novel teatures and combination be hereinafter described and 3 is an enlarged partial top plan view c .rriage;

is a rear view of the reciprocating and mechanism mounted thereon V Fig. 5 is an end View of the machine bed and carriage with the carriage reciprocating mechanism mounted thereon;

F ig. 6 is a sectional view on line 6-6 of Fig. 3;

Fig. 7 is a view from the opposite end shown in Fig. 5 showing the bed and reciprocating carriage and grinding wheel mechanism mounted on the carriage;

Fig. 8 is a sectional. view on line 8-8 01' Fig. 9 is an enlarged rear view of the crowning mechanism;

Fig. 10 is a sectional view on line 10-10 of Fig. 4;

Fig. 11 is a sectional view on line 11-11 of Fig. 9;

Fig. 12 is a sectional View on line 12-12 of Fig. 9;

Fig. 13 is a sectional view on line 13-13 of Fig. 9; v

Fig. 14; is an end view of the cam-wheel which controls the crowning operation;

Fig. 15 is a sectional view on line 15-15 of Fig. 6;

Fig. 16 is a sectional view of Fig. 6'

on line 16-16 Fig. 17 is a sectional view on line 17-17 of Fig. 6;

Fig. 18 is a sectional view on line 18-18 of Fig. 17

Fig. 19 is a sectional view on line 19-19 of Fig. 3;

Fig. 20 is a sectional view on line 20-20 of S;

Fig. 21 is a sectional view on line 21-21 of Fig. 19; and

22 is a sectional view on line 22-22 of Fig. 20.

The particularly embodiment of my inven tion which I have selected to illustrate in the accompanying drawings, comprises a bed 10 which may be of any proper or suitable configuration or shape to properly support the various mechanisms of which the machine consists. The mechanism supported upon tl bed may generally consist of a headstock A, a tailstock B, a reciprocating carriage C having mounted thereon the carriage operating and reversing mechanism D, and the grindi wheel operatin mechanism E.

The he, tuck st, shown it partienlm'lv in Figs. 1. and 2, may comprise a face'plate 12 provided withthe driving lugs 13 and roll centering pin 14, which may be rotated by a suitably mounted motor 15 through the driving chain 16. The tailstocl: B may comprise the rotatably mounted centering pin 17, and may be provided with the usual adjusting wheel 18 for adjusting the distance between the roll centering pins. It will be understood that the roll is set up between and supported by the headstock and tailstock, and suitably rotated by means of the drivinw plate 12 driven. in. turn by the motor 15. This motor may be controlled in any desired manner, and in the usual practice isconstantly in operation during the operation of the machine.

As shown in Fig. 1. the work supports just described, are mounted at one side of the bed. Upon the other side are arranged two slideways 20 and 21, upon which the main carriage is adapted to ride. Above these slide-ways may be arranged suitable guards 22 and 23 to protect the bearing surfaces of the ways from having foreign material lodged there on, such as grit or dirt which may result from the grinding operation. The upper bearing surfaces of these ways, as shmvn more particularly in 6, are formed in the shape of an inverted V. and slidably nmunted there-- on by means of complementally shaped bearings 25 and 26 is a main carriage 27, which is adapted to be reciprocated upon the bed upon these ways, and which carries the operating mechanism both for imparting to it its reciprocating motion and for operating the grinding wheel. The carriage may be provided with openings 28 and 29 through which can tend the guard-plates 22 and 23 which protect the slide-ways 20 and 21.

The carriage operating mechanism D is mounted upon the carriage adjacent one end thereof, as shown in Fig. 4, and comprises power mechanism for moving the carriage along the bed. and in addition automatically operating means for reversing the carriage at the end of its movement which causes it to reciprocate back and. forth over the bed, and as will be pointed out hereinafter, to cause the grinding wheel to traverse the work in a back an d forth movement.

Upon the bed 10 and. extending longitudinally thereof below the main carriage is mounted a rack 30, the teeth 31 of which are designed to be engaged by a gear 32 upon a vertically extending shaft mounted in suit able hearings in the frame 34 of the carriage operating mechanism 1). The gear 32 as Well as the lower end of the shaft 33 are adapted to move in a depression or channel 35 formed in the base below the carriage. As shown in Fig. 17, the shaft 33 upon which the gear 32 is rigidly secured, extends upwardly and is supported by a suitable thrustbearing 36. Above the thrust bearing a collar 37 is keyed to this shaft, and is provided upon its upper surface with a recess 3'? in which are a series of teeth 38 designed to be engaged by a pin 39 carried by a collar 40 rotatably mounted upon the shaft 33. The collar 40 is in driving engagement at all times through the pawl 40 with one face 4]. of a dependin shoulder 41 on the hub 42 of a worm-wheel. 43, which hub and wheel are also loosely mounted upon the shaft 33. The pin 39 is adapted to be moved out of engagement with one of the teeth 38 by means of the lever 44, and there upon engaged with another of the teeth upon the rotation of the collar so as to take up any lost motion which may appear in the train of gearing. The other edge 41 of the depending shoulder on the hub 42 is adapted to engage a shoulder 31 on. the collar 37 to effect a reverse drive of the shaft by the wormwheel 43.

The worm-wheel 43 is mounted within a suitable housing and is engaged by the teeth of a worm 43 mounted upon a shaft 47 which extends horizontally and transversely of the carriage. This snaft 47 is provided. upon its respective ends with gears 43 and 49, the gear 4-9 meshing with a gear 50 rigidly secured to a sleeve 51 loosely mounted upon a shaft 52 arranged parallel to the shaft 47. 'i he gear 48 meshes with an idler gear 53 mounted upon a stud 54. suruported by the housing, the gear 53 in turn meshing with a gear 55 secured to a sleeve 56 loosely mounted upon the shaft 52. Between the sleeves 51 and 56 is keyed to the shaft 52 a slidable clutch member 57 provided at its opposite ends with clutch faces 58 and 59, designed to engage corresponding clutch faces 60 and G1 on the sleeves 51 and 56. it will. be apparent that the shaft 33 may be driven in opposite oircctions from the shaft- 52, depending upon whether the clutch member 57 is in engage-- ment with the sleeve 56 or the sleeve 51.. The gear 50 secured to the sleeve 51 drives the shaft 47 through direct engagement with tho gear49, while the gear 55 upon the sleeve 56 lrives the shaft 47 through the agency of the intervening idler gear 53.

Mounted loosely upon the shaft 52 is a gear 64, the gear being keyedto a collar provided. with a clutch face 66 designed to be on gaged by the clutch face 6? upon a clutch collar 63 to clutch the gear in driving engage-- ment with the shaft 52, the collar being loosely mounted on this shaft.

T he gear 64 is designed to be driven from the carriage driving motor 70 by means of a. two-speed gearing mounted in the housing 71, as shown in Fig.15. The motor shaft 72 is provided. with a sprocket-wheel about which is trained a .sprocketchain 7 3 which drives a sprocket 74 secured to the shaft '7 5. Secured to this shaftare two gears 76 and 77 meshing respectively with gears 73 and 79 loosely mounted upon a counter-shaft 80, the

n of) lib hubs of these gears being provided with clutch faces 81 and 81 designed to be engaged by corresponding clutch faces at the opposite ends of the clutch collar 82. A rock-shaft 83 is journaled in the housing 1, and is connected to the sliding clutch collar 82, so that when this shaft is rocked by means of the crank or hand lever 8 the clutch collar 82 may be shifted to drive the shaft 80 either through the gears '70 and 78 or 77 Ul 79 as desired to effect the proper drivin speed. The actuating lever 892 may be pr vided with a springpressed pin de gned to enter recesses in the housing to maintain it in adjusteo positions. Upon the end of the shaft 80 is provided a gear 80 which meshes with the gear 6 1 so as to drive the shaft through the clutch collar fron'i the motor.

A manually operable lever 8'? is seemed to a rock shaft 88 carrying a clutch shi j 89, which controls the clutch collar 18 so that, when desired, the motor '50 may be cut off from the main carriage driving shaft Likewise, a hand lever 90, shown more especially in Fig. 6, is secured to a shaft 91 which, through suitable mechanism shown in Fig. 20 and to be more particularly described hereinafter, is connected to a clutch shifting rock shaft 92 adapted to shift the re clutch 57 by means of the clutch shit yoke 92 in order to drive the shaft 33 ii proper direction.

The operation of the carriage dri'vin anism heretofore described is as folloi. motor 1 0 through the sprocket chain 73 connected to the sprocket wheel 7% drives the shaft 2 5 which, through the two-speed mechanism shown. in Fig. 15, drives the shaft through the clutch 82. The gear 86 upon the shaft 80 being in mesh with the gear 64, the latter gear will be rotated and, through the cl tch 68 controlled by the hand lever 8?, drives the shaft 52 which, through the reversing clutch 57 and the selective 5 aring shown in 16, drives the shaft -17 either through the gears 55, 53 and 18 or the gears 50 and 49. The rotation of the shaft 17 upon which is mounted the worm 46 serves to rotate the worm wheel 43 which drives the shaft throu h the end play take-up collar 41:0. The at the lower end. of the iaft with the rack 30 upon the bed ant. this rac stationary, the rotation of this gear L. the shaft 33 causes the carriage C to be moved along the bed.

Automatic reversing mechanism for the carriage is provided which is capable of adjustment so that the movement of the carriage on the bed may be properly regulated to move the grinding Wheel to the end of the work and cause it to begin its return movement at that point, regardless of the of the roll bein operated upon.

This reversing mechanism, shown more particularly in Figs. 19 and 21, comprises a base plate slidably mounted upon a table 96 on the standard 3 which supports the carriage operating mechanism. At the ends of the base plate 95 are standards 97 and-98, upon which is mounted a sleeve or hollow cylinder 99 threaded upon its outer surface, as shown at 99 in l 5 and 6, and engaged with these threads are the reversing stop wheels 100 and 101. It will be understood that these wheels may be adjusted to any extent desired along the threaded surface of the sleeve 99 so as to determine the length of the oath of travel of the carriage by determining the point at which it is reversed. Within the sleeve 99 is loosely and slidably mounted a nut 102, provided with lug 1 3, which protrudes through a slot 104: in the sleeve 99 and, as shown in Fig. 21, is designed to contact with the stop wheels 100 and 101. The nut 102 is threadedly mounted upon threaded shaft 105, journaled at one end in the sleeve at 106 and journaled at the other end in a part of the casing 15, where it is provided with a gear 107 which meshes with a gear 108 at the upper end of the shaft 33, as shown in Fig. 17. Passing loosely through standards 97 and 98 on a bracket 90 secured to the table 96 is a shifting rod 110, having connected at one end thereof a rock arm 111 secured to the shaft 91. Secured upon the shifting rod between the standards 97 and 98 are two shifting nuts 112 and 113, carrying between bifurcated portions thereof the can ming rollers 11 1 and 115, which are designed to actuate the releasing pawls 116 and 117, pivoted to the standards at 118 and 119. Be tween the nuts 112 and 113, which are secured to the shaft 110, a shifting block 120 is loosely mounted upon this shaft, and to this block is connected a link 121 connected its other end to a rock arm 122 secured the shifting rock shaft 92. The block 120 is provided upon its upper side with lugs 123 and 124 adapted to be en aged by the pawls 116 and 117 to hold this block and the shifting shaft 92 in the desired position until the pawl is released by the co-operatino' carnming roller secured to one of the nuts upon the shaft 110. Compression springs 125 and 126 are mounted upon the shaft 110 between the nuts 112 and 113 and the shifting block 120, so that, after one of the nuts has been moved toward the block, the latter will be shifted by one of these springs when the clutch teeth are in the proper position to en gage. As will be understood, if a positive connection were arranged between the shaft 91 and the shifting shaft 92, damage to the mechanism would probably result.

The sliding plate 95 is provided at one end in Fig. 19 with a bracket 1330 upon the lower side of which is secured a short rack 131 the teeth of which mesh with a pinion upon the shaft 91, so that when the plate is shifted upon its support 90 the pinion 132 will be oscillated to actuate the shaft 91 and rock arm 111.

The operation of the automatic reversing mechanism is as follows:

Th stop wheels 100 and 101 are first properly adjusted upon the threaded sleeve 99 so that the carriage will be reversed at the proper time during its travel upon the bed 10. The carriage driving shaft 33, being in operation whenever the carriage is in motion, drives the shaft 105 through the spiral gears 10? and 108. The nut 102 mounted upon the threiuled portion of the shaft 105 will, therefore, be caused to travel along this shaft, as it is prevented from rotating due to the lug); 1.03 disposed in the slot 10 1 in the sleeve. When this nut has traveled to the position shown in 19 and 21, the lug 103 contacts with the stop wheel 100 and the continued rotation of the shaft 105 carries the sleeve 99 together with the plate 95 to the left and through the rack 131, causes the rotation of the pinion 132. This causes the oscillation of the rock arm 111 mounted on the shaft 91 which effects the movement of the shifting rod 110. The nut 118 being secured to this red is caused to move to the left and the cummingroller 115 engaging the lower side of the pawl 117 moves this pawl out of engagement with the lug 12 1- on the shifting blocl; 120. At the same time the spring 126 is compressed and the block 112 being also moved to the left, the tension on the spring 125 is relieved so that the shifting block 120 will be moved to the left by the spring 120 when the clutch teeth are in position to properly engage. The block 120 having been moved to the left, the pawl 116 will drop into engagement with the lug 123 so as to hold the block in position. The link 121 will. likewise be moved to the left by the movement of the bloclr 120 and will rock the clutch shifting shaft 92 through the rock arm 122 which accomplishes the movement of the reversing; clutch collar 57 to reverse the direction of the shaft 417, and as has been explained, the direction of rotation of the gear 82 to cause the carriage to traverse the base in the opposite direction. The shaft 105 is slidably mounted at its right-hand end, as shown in 19, in a bearing block 106 in the sleeve 99, so that when the sleeve and table 15 are shifted as has been described, this movement will not interfere with the bearing of this end of the shaft 105.

i /hen the shaft 3;?) is revert-zed in direction, it will also cause a rot in rotation of the shaft 105. which will in turn cause the nut 102 to travel in the opposite direction lonn'itrulinally of this shaft. vl hen the nut reaches the righthand end of the shaft 105, as shown in Fig. 19, the inn; 103 contacts with the stop wheel 101 and causes the sleeve 99 and table 95 to be shifted to the right to es cillate the pinion 132 and shaft 91 in the opposite direction and shift the reversing clutch to again reverse the direction of travel of the carriage.

The grinding wheel mechanism E is supported upon the end of the carriage opposite the carriage operating mechanism and be tween the two is a seat 14:0 for the operator. The grinding; wheel shown at 1.41 and is mounted upon a shaft 142 driven by a motor 111-3 through a suitable chain and sprocket commotion i l-*1. The motor shaft is also connected by a belt 14.5 to an oil pump 1 16 which through the pipe 1 Y delivers oil where needed to the bearings of the grinding; wheel shaft. The grinding wheel and motor are suitably mounted. upon a wheel base 150,'the meter base 151 being disposed between adjusting screws 153 and 1523" so that its position maybe adjusted as desired. The grinding; wheel base 150 is movably mounted upon a sub base shown more particularly in Fig. that the wheel. support may be mo ed trans verscly of the bed and of the carriage and .relatively to the sub base to set the wheel up to the work or roll being ground. The sub lase is provided for this purpose with the slideways 152" and 152 upon which complementally shaped bearing surfaces upon the wheel base are designed to rest. This movement of the wheel base is accomplished either through the hand-wheel 154 or the motor 1*, both of which are connected to a shaft 155 (Fig. 10) upon which is keyed a worm 156 cog ing a worm-wheel 15'? upon a nut 158 rotatably mounted in bearings 159 in a part of the wheel base. The nut 158 is threaded internally and engaged by the threaded portion 100 of a shaft 161 mounted in suitable bearings in the sub base 152 and extending; transversely of the bed of the machine. It will be understood that when the shaft 155 is rotated either by the hand-wheel 153 or motor 15 1, the not 158 will be turned, and because of its mounting in the wheel base and its threaded connection with the shaft 100 the wheel base and nut will be moved along the shaft to properly position the grinding wheel 140 relatively to the work.

In order to impart to the roll beini around the proper crown or the proper concavity or convexity in its surface, I have provided n'iechanism for automatically effecting zip-- preaching or receding); movements between the grinding wheel and the work during the travel of the former. For this purpose, the sub base 152 is pivot-ally mounted near the edge adjacent the work upon the trunnion. 165. At the opposite or rear side a roller 166 is mounted upon the wheel base and is designed to rest upon the surface of an adjustably mounted cam wheel 167, suitably sup ported by the carriage and oscillated chronously with the movements of the carthe base, as will be hereinafter de- 116 tan ular end 171 of a shaft- 172 rotatably mounted on the carriage (Figs. 1 and 13). The wheel 169 is provided with a rectangular openin 173 designed to receive the squared end. 171 of the shaft, the wheel being adjustable vertically as shown in Fig. 14, by the rotation of the threaded stud 171 which passes through the end of the shaft and impinges at its ends against the edges of the rectangular opening in the wheel. The shaft 172 is pro vided with slideways 1 7 115 and 176 in which the opposite edges of the opening 173 of the wheel are slidably mounted and rearwardly of these ways the shaftis provided with the beveled. sides 177 and 178 between which and the annular flange 170 upon the cam wheel aremounted beveled gibs 179 and 180. Bolts 181 and 182 are passed through these gibs and receive on their ends nuts 183 and 18 1 so that the cam wheel will be tightly locked in place against the shoulders of the slidc ways 175 and 176 of the shaft. It will be understood that when the nuts 183 and 18 1 are loosened and the threaded stud 17 lrotilted. the cam wheel 169 and cam ring 167 may be moved relatively to the axis of the shaft 172 so as to set the wheel eccentrically on the shaft.

The shaft 172 is mounted in suitable bearr 185 and 186 on the carriage and is provided with a worm-wheel 187 engaged by a worm 188 upon a vertical shaft 189 also mounted in suitable bearings on the carriage. At the upper end of the worm shaft is a change gear 190 meshing with a change gear 191 upon parallel counter-shaft 192. A

r 193 is loosely mounted upon the lower or of the shaft 192 and is adapted to be latched thereto by the clutch collar 194 operad 'y the shifting yoke 195 on the rock shaft 6, which is operated by the manually engable clutch lever 197, shown in Fig. 4. 1 1e teeth of the gear 193 are in mesh with the teeth of a rack 198 mounted upon the main base so that as the carriage travels upon the base the gear 193 will be caused to retatby its engagement with the teeth of the rack and due to the reciprocating movement of the carriage will obviously be rotated first one direction and then in the other. At the end of the shaft 189., as shown in Fig. provided a gear 200 meshing with a 201 upon sha it 202 provided with a end 203 for the application of a neh. crank or the like, so that the position of the shaft 172 and cam Wheel may be manually adjusted when the clutch collar 194 is thrown out of engagement to properly position the eccentric wheel relatively to the position of the carria e at the beginning of the grinding operation.

It will be obvious that the tilting of the sub base 152 upon. the trunnion 165 will cause the grinding wheel 1 11 to move toward and re cede from the roll being operated upon so as to form the desired crown upon the surface of the roll, or if the sub base is not tilted the roll will, of course, be ground with a truly cylindrical surface. As the carriage moves back and forth over the main base of the machine, the gear 198 engaging with the rack 198 effects the rotation of the shaft 192 which. through the change gears 191 and 190 and the worm 18S, effects the oscillation of the shaft 172 upon which the cam wheel 167 is mounted. If this wheel is adjusted so that it is mounted eccentrically with respect to the axis of the shaft 172. it will obviously, due to its contact with the roller 166 as shown in Fig. cause the sub base to tilt as it oscillates to and from the central position shown in this figure.

If it is desired to grind a roll with a con cave surface the cam wheel 167 is adjusted upwardly as shown in Fig. ,10, so that it causes the grinding wheel to tilt forwardly and downwardly toward the roll. lVhen the proper adjustment is given the cam wheel the carriage is moved until the grinding wheel is at the center of the grinding roll. The clutch collar 194: is then moved to dis engaging position and the operator by means of a wrench or crank upon the squared end 203 of the shaft 202, shown in Fig. 12, rotates the worm 188 to turn the shaft 172 so as to position the cam wheel 167 at its central or highest position, as shown in Fig. 10. This is the position Where the grinding wheel will effect the deepest cut in the roll and which, of course, should be at the center of the roll, The clutch 194 is connected and the machine set into operation. As the carriage moves back and forth across the bed as heretofore explained, the cam wheel will be oscillated first in one direction and then in the other from its central position, the wheel passing this position as the grinding wheel passes the center of the roll. As the cam wheel is oscillated, the sub base 152 will be tilted upwardly as the wheel approaches its central position and then allowed to descend under its own weight so that the grinding wheel base will be tilted and cause the wheel to make a deeper cut at the center of the roll than at the ends so as to produce the proper concavity in the surface of the roll. It will be obvious that the cam wheel 167 may be adjusted for degree of concavity desired.

If it is desired to grind a roll having a per fectly cylindrical surface the cam wheel is placed in a position concentric with the shaft ill 17:2 so that during the oscillation of this wheel there will be no tilting movement imparted to the wheel base.

In a similar manner, it it is desired to grind a roll with a convex surface the center of the cam wheel will be placed below the center of the shaft 172 so that the carriage approaches the central point of its path across the base, the sub base of the grinding wheel will be allowed to tilt rearwardly or away from the roll being ground, so as to remove a greater amount of material from the end of the roll than from the intermediate portion. it will be obvious that the operator upon the seat 15 .0 is within easy reach oil the reverse and clutch levers E O and 87 and the change speed lever 84, the adjusting wheels and 101, as well as the hand-wheel 154i; tor adjusting the wheel base transversely to feed the grinding wheel to the work and the clutch lever 197 so that all of the necessary controls are within easy and convenient reach.

It will also be obvious that once the machine is set in motion the operation will be substantially automatic until the grinding of a roll has been completed. The stop wheels 100 and 101, when properly adjusted upon the sleeve 99, will ellect the reverse of the carriage operating mechanism so that the re verse movement of the carriage will take place at the proper time when the grinding wheel has completely traversed the roll. At the same time, the proper tilting movement will be imparted to the sub base of the grinding wheel to eli'ect the proper crowning ol the roll so that it will only be necessary for the oporator to turn the hand wheel 1541- so as to keep the grinding wheel in proper contact with the work as the grinding operation procoeds.

The provision of the change gears 190 and 191 allows for a variation in the speed of rotation of the disk or cumming member, whereby the relation between the speed of rotation thereof and the reciprocating speed of the carriage may be altered. Such a change in the speed relation between these parts desirable, for example, where the same amount of concavity is to be ground or formed upon the surface ot two rolls of unequal length. In such an instance, the speed of rotation of the camming member would be slower when grindin the longer roll than when grinding the shorter one, the reciproeating speed of the carriage remaining the smile in both cases.

I do not claim herein the inverted ll-shaped ways, either alone or in combination with other structure in a grinding machine or the like, as the same forms the subject matter oi a eo-pen ding application of Albert A. Baker, Serial l lo. 'Tfirlfi'afi, tiled august 28, 1924i, Patout No. 1.66.),504l, granite, May 15.

While I have shown and described a preferred embodiment of my invention, it will be understood that it is not to be limited to all the details shown but is capable of 1nodilication and variation within the spirit of the invention and within the scope of the appended claims.

l/Vhat I claim is 1. In a grinding machine, a work support. a carriage, means for reciprocating said car riage relatively to the work carried by said support, a grinding wheel, a grinding wheel base upon which the wheel is mounted, a subbase mounted upon the carriage and in turn supporting said wheel base, said wheel base being movable on the sub-base transversely relatively to the carriage, and said sub-base pivoted upon the carriage at a point adjacent the grinding wheel.

2. In a grinding machine, work supports, a carriage mounted to reciprocate relatively to said supports, an operators seat provided at an intermediate portion of the carriage, mechanism mounted upon the carriage on one side of said operators seat for effecting the reciprocation oi? the carriage, a sub-base pivotally mounted upon the carriage at the other side of the operators seat, a grinding wheel support mounted upon said sub-base, a grinding wheel mounted on said support, said support being movable upon said subbase in a direction transversely of the carriage toward and from the work support, means to tilt said sub-base relatively to said carriage controlling means for the reciproeating mechanism, controlling means for effecting the transverse movement of the grinding wheel support, controlling means for said tilting means, all of said controlling means being disposed adjacent the operators seat so as to be accessible to the operator thereon.

3. In a grinding machine, work supports, a carriage mounted to reciprocate relatively to said supports, means for reciprocating said carriage, a grinding wheel mounted on said carriage to tilt toward and from the work carried by the supports, and means tor tilting said grinding wheel during the reciprocation ot the carriage comprising a rotatable adjustable cam member, said member being arranged to oscillate synchronously with the reciprocation of the carriage.

4. In a grinding machine, work supports, a carriage mounted to reciprocate relatively to said supports, means for reciprocating said carriage, a grinding wheel mounted on said carriage to tilt toward and from the work carried by the supports, and means for tilting said grinding wheel. during the reciprocation of the carriage comprising a rotatable adjustably mounted cumming member located beneath and directly supporting the grinding wheel mounting, and means to oscillate said cumming member during the reciprocation oi the carriage.

In a grinding machine, work supports, a carriage mounted to reciprocate relatively Ill.)

tit

of said rack to eliect the rotation of the pinion when the carriage 's reciprocated, a horizontally disposed shaft mounted on the carriage and arranged to be rotated by the rotation of said pinion, and a cam wheel eccentrically mounted on said horizontally disposed shatt and disposed in position to engage said base.

ll. In a roll grinding machine, a main base, work supports mounted on said base, a carriage movably mounted on the base, means for elli'ecting iuoven'ient ot the carriage relatively thereto, automatically acting,- means for e'ltecting the reciprocatimi oi the carriage, said moving means and said automatically acting means being mounted on said earriage, a grinding when], a grinding wheel base mounted on said carriage tor tilting movement toward and il roiu the worlt car ried in said supports, and means 'ior tilting; said base including a shalt mounted on the carriage, a rack mounted. on the base, a pin ion rotatably carried by the carriage and engaged with the teeth oi said rack to eitcct the rotation of the pinion when the carriage is reciprocated, a shaft mounted. on the carriage and arranged to be oscillated by the rotation of said pinion, and a cam wheel eccentrically and movably mounted on said shaft.

15. In a grinding machine, a bed, means for SUPPOl'tiHg the work to be operated upon, a. carriage slidably supported upon the bed adjacent the WOl'li supports, power means for reciprocating the carriage mounted thereupon includinp; means for automatically re vcrsingr the movement of the carriage, and means for driving the carriage at a plurality of spec l i, a indinp; wheel support mounted on the carriage, a grinding wheel on said supp ort, an d an electric motor mounted on the ndi gi' wheel support for rotating the wheel.

lo. in a grinding; machine, a bed, means for supporting the worlt to be operated. upon, a carriage slidahly supported upon the bed, carriage operating merhanism, supported on the bed. including); a power source, achann'e speed iueeluinism, means for reversing; the movement ot the car agre and a grinding; wheel supportmounted on the carriage, grindin wheel on. said support, an electric motor mounted on said wheel. support tor the wheel. and m ans mounted. on ria e tor tilti lid. wheel support toward and from the vorlt.

l7. flu a grindingi machine, a bed, means for siuiportii 1' the work to be operated upon, a carriage slidahly supported upon the bed, carriage operating mechanism supported on the bed, comprising; a power source, a change speed mechanism, and means for reversing the movement ot the carriage, a grinding wheel support mounted on the carriage, a

lacunae grinding wheel on said support, an electric motor mounted on said wheel. support for retating the wheel, and power operable means for feeding the grinding wheel toward the worl; transversely of the bed.

18. In a grinding machine, a bed, means for supporting the work to be operated upon, a carriage slidably supported upon the bed, carriage operating mechanism supported on the bed comprising a power source, a change speed mechanism, and means for reversing the movement of the carriage, a grinding wheel support mounted on the carriage, a grinding Wheel on said support, an electric motor mounted on said wheel support for retating the wheel, means for tilting said Wheel support toward and from the work, and power operable means for feeding the grinding wheel toward the work transversely of the bed mounted upon said wheel support.

19. A grinding machine comprising a bed, a carriage slidably mounted on the bed, reversing means for causing reciprocation of said carriage in either direction comprising a shatt rotated when the carriage is moved and control means actuated by the rotation oli this shaft.

20. A grinding machine comprising a bed, a carri a ge slidably mounted on the bed, means tor driving said carriage, reversing means for said driving means, a. shaft rotated when the carriage is moved and in synchronism therewith, and control means for said reversing means actuated by the rotation oi said shaft to set said reversing means into opera.- tion.

21. A grinding machine comprising a bed, a carriage slidably mounted on the bed, means for driving said carriage, reversing means for said driving means, a. shaft rotated when the carriage is moved, control means for said reversing means actuated by the rotation of said shaft to set said reversing means into operation at a. predetermined point the travel. of the carriage.

22. A grinding machine comprising a bed, a carriage slidably mounted on the bed, means for driving said carriage, reversing means for said driving means, a shaft rotated when the carriage is moved, adjustable stops associated with said reversing means adapted to be set to define the length of the path of travel. of the carriage. and control means actuated by said rotatable shaft to engage said stops and set the reversing means into operation.

23. A grinding machine comprising a bed, a carria slidably mounted on the bed, means for driving said carriage, reversing means for said driving means, a shaft rotated when the carriage is moved, a slotted sleeve associated with said reversing; means, a pair of stops adjustably mounted on said sleeve, and a traveling; block within the sleeve and co11- trolled by the rotation of said shait to engage said stops and set the reversing mechanism into operation.

2%. A roll grindin,e machine comprising a bed, a carrie slidably mounted on the bed, driving me for the car iage, reversing means for said driving m s, and means to automaticallv set said reversing means into operation, com i ii a rock haft, member ed on said carriage and engaged with said rock shaft to actuate the same, means to shift said slidable member, a link connected. to said rock shaft, pair of springs adapted to be compressed by movement of said link, and means pos tioned between said springs and opera ed thereby, said means being connected to said reversing means.

25. roll grinding machine, comprising he 1, carriage slidably mounted on the bed, drivin means for said carriage mounted thereon, reversing means for said driving means, and means for actuating; said revers ing' means, comp isinorock shatt, auto matic means for rocking said sh 1 at predetermined time in the tra el o no carriage. a link connected to said rock shaft, a pair ct blocks secured to said link in spaced relation, a third block slidably moun ed on s id link and connected to the rover .ng; m a compression springs mounted between said nanui slidably mounted block and said secured blocks.

26. A roll grinding machine con'iprising a bed, a carriage slidably mounted on the bed, for said carriage mounted thereon, reversing means for said driving d1 Vl 111621118 in said link an"; *onnected to tl W Jeans, compression springs mounted bent-eon said slidably mormted block ane said secured blocks, and means ior holding said slidably mounted block in adjusted position.

2'7. In a grinding machin a carriage, means for reciprocating said carriage, a sub base ext ling" transversely of rid carriage and pioted thereto at one end thereof, a grinding wheel support slidably mo upon said sub-base, a grinding wheel rotatablv mounted upon said support, an electric motor arranger, to drive said grinding wheel mounted upon said support, and means operaed bv the movement said carriage to raise and to allow the lowering of the unconnected end or said sub-base to move the grinding wheel toward and away from said carmag-e,

28. grinding machine, a carriage, recs 0 reciprocate said arriage, asubbase,

raise and to allow the lowering of the engaged end of said sub-base during the reciprocation of said carriage.

29. In a grinding machine, a work support, a carriage, means for reciprocating" said carriage relatively to the work carried by said support, a subbase having; one end pivotally connected to the side of said carriage adjacent the work support, a grinding wheel support mounted upon said sub-base and arranged thereon for sliding movement toward and away from said work support. means to support the other end of said sub-base comprising rotatable disk mounted upon said carriage and engaging the last mentioned end of 'l sub-base, and means to rotate said disk.

30. In a grinding machine, a work support,

carr age, means for reciprocating said carrelativelv to the work carried by said support, a sub-base having one end pivotally connected to the side of said carriage adjacent the work support, a grinding wheel support mounted upon saio sub-base and arranged thereon for sliding movement toward and away from said work support, means to support the other end of said subbase comprising a rotatable disk mounted upon said carriage and engaging the last mentioned end of said sub-base, and means to rotate said disk, said last named means being operable by the reciprocating movement of said carria 3i, In a grinding machine, a work support, a carriage, means for reciproczutingsaid carrelatively to the work carried by said support, sub-base having one end pivotally com ected to the side of said carriage acent the work support, a grinding wheel support mounted upon said. sub-base and arranged thereon for sliding" movement toward and away from said work support, means to support the other end of said sub-base comprising a rotatable disk mounted upon said car-- riagre and engaging the last mentioned end of said sub-base, and means to rotate said disk, said la t named means being operable by the reciprocating movement of said carriage, and comprising a shaft upon which said disk is mounted, and a change gear train whereby the speed of rotation of said disk may be varied.

82. In a grinding machine, a work support, a carriage, means for reciprocating said carriage relatively to the work carried by said supiert, a sub-base having a portion thereol pivotally connected to the side of said riage adjacent the work support, a grinding wheel support mounted upon said sub-base,

lit)

means to support another portion of said :nib-lmse comprising a shaft mounted upon said carriage, a disk secured upon an end. o't said shaft and engaging said sub-base at the last mentioned portion thereoi. a. train oit gears in driving arrangement with said shalt, and cooperating means between said. gears and the bed 0t said machine whereby the reciprocating n'iovmnent oi" said carriage rotates said disk.

33. In a grinding machine, a work su port, a carriage, means for reciprocating said earriage relatively to the work carried by said support, a sub-base having a portion the-root pivotally connected to the side of said can riage adjacent the work support, a grinding wheel SllPpOl't) mountlal upon said sub-base, means to support another portion of said sub-base comprii ing a shaft mounted upon said carriage. a disk mounted upon an end of said shaft and arranged to be eecentrically adjuidfid relatively thereto, the periphery of said disk engaging said sub-base at the last mentioned portion thereof. and means to ro-- tate said disk inn-hiding an z-irrangenient of gears operable by the reciprocation of said carriage.

in a grinding machine, a reciprocable carriage, a grinding wheel, a grinding wheel base upon which the wheel is mounted, a subbase pi votally mounted upon the carriage and in turn supporting said wheel base.

35. la a grinding machine, a reciprocable 'arriage, a sub-base having a portion thereof pivoted to an adjacent longitudinal side of said carriage, a grinding wheel support mounted upon said sub-base, means to support another portion of said sub-base comprising a rotatable disk mounted upon said carriage an engaging the last mentinned portion ot aid sun-base, and means to rotate said disle 36. la a grinding machine, a reciprocable carriage, a subdmso having a portion thereei pivoted to an ad u-ent longii'iulinal side oi said carriage, a griiuling wheel support mounted upon said sub-base, means to support another portion of said sub-base comprising a rotz'dable disk mounted upon said carriage and engaging the last mentioned portion of said sub-base, and means to rotate said disk, said last named means being operable by the reci n'ocatipg movement of said carriage.

37. in a grinding machine, a reciprocable carriage, a sub-base having a portion thereof pivoted to an adjacent longitudinal side of said carriage, a grinding wheel. support mounted upon said sub-base, means to sup port another portion of said sub-base comprising a rotatable disk mounted upon said carriage and engaging the last mentioned portion at said sub-base, and means to rotate said disk, said last named means being operable by the reciprocating movement of said carriage, and comprising a shaft upon which said disk is mounted, and a change gear train whereby the speed of rotation 01": said disk may be varied.

38. la av grinding machine, a reciprooablev carriage, a sub-base having a part thereof pivoted to an adjacent longitudinal side of said carriage, a grinding wheel support mounted upon said sub-base, means to support another part of said sub-base comprising a, shaft mounted upon said carriage, a disk secured upon an end of said shaft and engaging said sub-base at the last mentioned part thereot, a train of gears in driving arrangement with. said shaft, and cooperating means between said gears and the bed of said machine whereby the reciprocating movement of said carriage will rotate said disk.

39. In a grinding machine, a reciprocable carriage, a sub-base having one end pivoted to an adjacent longitudinal side oi said carriage, a grinding wheel support mounted upon said. sub-base, means to support the other end of said sub-base comprising a shalt niomned upon said carriage, a disk mounted upon an end of said shaft and arranged to be eeeeutrically adjusted relatively thereto, the periphery of said disk engaging said subbase at the last mentioned end thereof, and means to rotate said disk including an arrangement of gears operable by the reciprocation of said carriage.

it). in a grinding machine, a reciprocating carriage, a grinding Wheel mounted. on the carriage to tilt toward and from work carried by adjziicent supports, means for tilting saidv gzjriiuling wheel comprising a shaft oscillated synchronously with the reciprocation of the carriage, said shaft being provided with a rectangular end portion and a cannning wheel. having an opening to receive said end portion and being mounted thereon for adjustment transversely of the axis of the shaft.

at. in a grinding machine. a reciprocaa ing carriage, a grinding Wheel supported on said carriage, means for tilting said grinding wheel con'i 'irising a camn'iing member eccentrically arranged on the carriage, means for oscillating said member synchronously with the reciprocation of the carriage, means on the grinding Wheel support resting freely upon said cumming member to impart a tilting motion to the tormer from the latter, and means or feeding the rinding wheel ti" isversely without disturbing the position of the eannning member on the carriage.

4-2. In a grinding machine, a bed having a longitudinally extending runway, a carriage slidably mounted upon said runway, a rack extending longitudinally of said bed. a pinion engaging said rack, means on said carriage for rotating said pinion, another rack extending longitudinally of said bed, a sub-base pivotally mounted at one end thereot to said carriage adjacent a longitudinally extending side thereof, a grinding wheel support slidably mounted upon said subbase for movement transversely relatively to said carriage, a rotatable disk mounted adjacent the other side of said carriage and engaging the free end of said sub-base, and means carried by said carriage, in operable connec tion with said disk and in engagen'ient with said last named rack whereby said disk is rotated in synehronism with the rotation of said pinion.

43. In a grinding machine, a longitudinally extending member, another member extending nsversely of and having one end thereol pivoted to one side of said first mentioned member, a grinding wheel support siidably mounted upon said. second mentioned member, rotatable disk-like member mounted upon said lirst mentioned member upon a supporting member adjacent the free end of said second ientioned member, said diskdike member being adapted to support the free end of said second mentioned member upon the peripl'iery thereof, and means to move said disk-like member relatively to the tlI-ZlS of the support therefor whereby a rocking motion will be imparted to said second mentioned member when said disk-like member is rotated id. In a grinding machine wherein a grindin wheel support is slidably mounted upon a sub-base, which is turn is pivotally supported at one end thereof to a reciprocable carriage, a rotatable member supported upon said carriage and adapted to engage the free end of the sub-base, said member bcing provided with a convex periphery, a sup port for said member having a portion upon whi h said member is mounted, and means to move said member transversely relatively to said support whereby a rocking motion is imparted to the sub-base when said member is rotated.

4:5. in a grinding machine, a bed, a rcciprocable carriage slidingly mounted upon said bed, a sub-base having an end thereof pivoted to an adjacentlongitiu'linal side oi? said carriage, a grinding wheel support slidably mounted upon said sub-base, means to tilt said sub-base relatively to said carriage comprising a rotatable member mounted upon said carriage and in su morting engag'ement with the free end of said sub-base, and means to rotate said member, including a shaft member, cooperating means between said bed and said shaft member whereby the shaft member is operated by the reciprocating movement oi said carri go, and means to engage and disengage said cooperating means.

l6. In combination with a grinding machine having a grinding wheel supporting structure adapted to be tilted to carry the wheel toward and away from the work to be ground, a stationary work support, a carriage on which said wheel supporting structure is nounted, means for reciprocating the carriage, a rockable member having curved surtaco adapted to engage said wheel supporting structure to tilt the same, said suri a being adjustable relatively to the grinding wheel supporting structure, and means providing for the rocking of said membenat a plurality different speeds relatively to the carriage speet $7. In combination with a grinding machine having a grinding wheel su 'iporting structure adapted to be tilted to carry the wheel toward and away from the work to be ground, a rotatable disk adapted to engage said wheel supporting structure to tilt the same, means to rotate said disk, means for adjusting said disk toward and away from the grinding wheel supporting structure to vary the contour otthc work, and means providing for the rotation of said disk at a plurality of different speeds.

48. In combination with a grinding machine having a grinding wheel supporting structure adapted to be tilted to carry the wheel toward and away from the work to be ground, stationary work support, a carriage on which said wheel supporting structure is mounted, means for IQCll'JlOCtthli'lg the carriage, a rotatable disk adapted to tilt said wheel supporting structure, and means providing for the rotation of said disk at a plurality of dilierent speeds relatively to the carriage speed, and means for setting said disk at varying degrees of eccentricity relatively to its mounting.

49. In combination with a grinding machi is having a work support and a grinding wheel supporting structure, and wherein said work support and said wheel supporting structure are reciprocable with respect to each other, said wheel supporting structure being adapted for tilting movement toward and away from said work support, a movable member having a (ramming surface adapted to engage said wheel supporting structure to tilt the same, means to move said member operably by the aforesaid reciprocable movement, means for feeding the grinding wheel transversely independently of said movable can'imiug member; and means providing a variation in the speed of the movement of said member.

50. in combination with a griiiiding machine having a grinding wheel supporting structure adapted to be tilted to carry the wheel toward and away from the work to be ground, a rockable member having a curved surface upon its per phery, said member beadapted to en age upon the curved pel1 heral surface thereof, said wheel supportng structure to tilt the same, means to adjust said rockable member toward and away from the grinding wheel supporting structure, and means to rock said member, includ- 

